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  1. let exch chr =
  2. match chr with
  3.      'a' -> 'C'
  4. 	|'b' -> 'A'
  5. 	|'c' -> 'D'
  6. 	|'d' -> 'B';;
  7.  
  8. let rec crypt  str ?(num=0) =
  9. 		str.[num] <- exch (str.[num]);;
  10. 		if num <= String.length str then crypt str (num+1);;
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
File "prog.ml", line 2, characters 0-69:
Warning P: this pattern-matching is not exhaustive.
Here is an example of a value that is not matched:
'e'
File "prog.ml", line 8, characters 25-26:
Warning X: this optional argument cannot be erased.
File "prog.ml", line 10, characters 5-8:
Unbound value num
stdout
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Standard output is empty
https://ideone.com/DCjJTT
language:
OCaml (ocamlopt 4.05.0)
created:
11 years ago
visibility:
public

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